北京理工大学机械与车辆学院是国内知名的机械类专业学院,综合实力处于国内同类高校前列,部分研究方向达到国际先进水平,建院以来为我国国民经济和国防工业培养了大批杰出人才。学院下设车辆工程系、热能与动力工程系、制造工程系、交通工程系、机电科学基础部、工程训练中心、学科基础实验中心、学院办公室等单位。学院现... [详细]
作者: 许云婷,田冉,戴晓业,史琳 (清华大学热科学与动力工程教育部重点实验室;北京理工大学机械与车辆学院;清华大学化学工程系绿色反应工程与工艺北京市重点实验室)
出处: 工程热物理学报 2022 第43卷 第2期 P296-303
关键词: 有机朗肯循环;亚/跨临界;热源回收效率;净现值NPV;换热面积
摘要: 本文以有机朗肯循环(ORC)跨临界与亚临界工质换热特性最新研究成果为基础,采用热力学指标热源回收效率,以及经济学中的净现值(NPV)概念,结合换热面积分析,建立了考虑实际换热情况的热力学及经济性模型,更合理、更全面地对亚临界循环与跨临界循环的热力学性能和经济性进行了统一分析,为工程实际中亚临界和跨临 ...
作者: 伊卫林,程鸿亮,王进 (北京理工大学机械与车辆学院叶轮机械与增压技术研究所)
出处: 第六届空天动力联合会议暨中国航天第三专业信息网第四十二届技术交流会暨2021航空发动机技术发展高层论坛 中国四川成都 2022
会议录: 第六届空天动力联合会议暨中国航天第三专业信息网第四十二届技术交流会暨2021航空发动机技术发展高层论坛
关键词: 涡轮级;自由曲面变形;机器学习;支持向量机;气动优化设计
摘要: 高压涡轮负荷水平需持续提升以满足发动机性能要求,但其激波、二次流、间隙泄露流等复杂流态加剧,设计难度增加。本文提出了基于自由曲面变形(FFD)参数化方法和机器学习方法的涡轮气动优化设计策略,通过对FFD参数化、拉丁超立方实验设计、支持向量机模型、遗传算法寻优等系列方法的研究,搭建了自动优化设计流程和 ...
作者: 姚卉,席军强 (北京理工大学机械与车辆学院)
出处: 建设科技 2022 第1期 P58-61
关键词: 智能汽车;混合增强驾驶员认知;脑电信号
摘要: 智慧城市和智慧交通的建设迎合了人类社会生产与生活方式变革的需求,也对智能汽车的发展带来了严峻的挑战;其中,以人类驾驶员为中心的智能汽车是未来发展的重要目标之一,驾驶员认知是实现该目标的前提和基础。本文主要围绕驾驶员认知针对性地分析了融合脑电信号的混合增强驾驶员认知方法,并对其在未来智能汽车发展中的应 ...
作者: 钟后顺,贾铎,赵爽,张哲,石大鹏,王润良,丁晓宇,张旭 (北京理工大学机械与车辆学院;中国航发沈阳发动机研究所;中国航空综合技术研究所;河南航天精工制造有限公司;河南省紧固连接技术重点实验室)
出处: 强度与环境 2022 第49卷 第1期 P15-22
关键词: 管接头;密封性能;螺纹松动;防松螺纹;旋转弯曲疲劳试验
摘要: 螺纹连接松动被认为是导致管接头密封性能衰退的因素之一,但工程中缺少证明该观点的试验数据。本文基于HB 6442-90规定的旋转弯曲疲劳试验方法,以74°锥面管接头为研究对象,验证了往复载荷作用下管接头的螺纹连接可能出现松动并导致管接头密封性能逐渐衰退。本文还对传统的管接头进行了改进,引入了一种新型防 ...
作者: Xiaoyu Pan1;Zhibing Liu1;Lu Zhang1;Xibin Wang1; (1School of Mechanical Engineering, Beijing Institute of Technology, Haidian, Beijing, China.)
出处: Journal of Physics: Conference Series 2022 Vol.2264 P012002
摘要: Assembly clearance has a great influence on the performance of precision parts. Improper assembly clearance affects the working state and induces fail ...
作者: Xiaoyang Zhao1;Tairan Chen1;Biao Huang1;Guoyu Wang1; (1School of Mechanical Engineering, Beijing Institute of Technology Beijing, 100081, RP China)
出处: Journal of Physics: Conference Series 2022 Vol.2217 P012018
摘要: Due to the structural design requirements, tip leakage flow is a common phenomenon in the field of axial flow rotating machinery. The tip leakage flow ...
作者: Zhendong Mu1;Tairan Chen1;Wendong Liang1; (1School of Mechanical Engineering, Beijing Institute of Technology Beijing, 100081, RP China)
出处: Journal of Physics: Conference Series 2022 Vol.2217 P012017
摘要: The rotating cavitation in the inducer has a crucial influence on the safety and operation efficiency of heavy-duty liquid rocket engines. The objecti ...
作者: Botai Su;Ce Yang;Hanzhi Zhang;Xin Shi;Li Fu (School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)
出处: Journal of Fluids Engineering 2022 Vol.144 No.3 P031207
关键词: centrifugal compressor;casing-wall static pressure;single-peak;original flow balance;flow mutation
摘要: The casing-wall static pressure of the centrifugal compressor behaves the double-peak distribution in the circumference at small flow rates (SM) but t ...
作者: Zhenyao Guo1;Weizheng Zhang2;Shuang Jin1;Zhicheng Shi1;Yanpeng Yuan1; (1 School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, China. ;2 School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, China. zhangwz@bit.edu.cn.)
出处: Scientific reports 2022 Vol.12 No.1 P6771
摘要: In this paper, the heat transfer characteristics of spray-wall impingement on a high temperature wall were studied by using a transient thermocouple a ...
作者: Gao, Jianbing12;Li, Xiaopan3;Li, Juxia4;Wang, Shanshan5;Tian, Guohong6;Ma, Chaochen1;Yang, Ce1;Xing, Shikai7; (1School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, China;2Key Laboratory of Shaanxi Province for Development and Application of New Transportation Energy, Xi'an, 710064, China;3Beijing Product Quality Supervision and Inspection Institute, National Automobile Inspection & Test Center (Beijing), Beijing, 101399, China;4Shijiazhuang Information Engineering Vocational College, Shijiazhuang, 050035, China;5Analysis & Testing Center, Beijing Institute of Technology, Beijing, 10081, China;6Department of Mechnical Engineering Sciences, University of Surrey, UK, Surrey, GU2 7XH, United Kingdom;7School of Vocational and Technical, Hebei Normal University, Shijiazhuang, 050024, China)
出处: Chemosphere 2022 Vol.300
摘要: A wide literature has demonstrated that internal combustion engines are the main responsible for the emission of fine particles in urban areas. Within ...